Hobby Algenkiller ensures very effective, quick and reliable control of the most common types of algae in the aquarium such as green, red, brown and slime algae. This is a gentle treatment for the rest of the aquarium using a photosynthesis inhibitor. The anti-algae active ingredient only attacks the metabolism of the algae and destroys the ability to photosynthesise within the cell. The algae then die. Even the development and further growth of stubborn types of algae such as thread algae is disrupted and the algae is eradicated from the aquarium. The Hobby Algenkiller is also suitable for use as preventive treatment.Hobby Algenkiller+ fights algae of all kinds effectively, quickly and reliably+ prevents reoccurrence of algae+ rapid release of active ingredient ensures direct control of algae+special liquid formula guarantees optimal distributionApplication and dosage of Hobby AlgenkillerMaintenance dose: Use 5 ml for every 20 l of aquarium water every 4 weeks. Control dose: Use 5 ml